It's been a big week for ACT's David Seymour - who's been in and out of the news after a series of scandals.

Last Sunday, it was revealed Seymour wrote a letter to police in support of Philip Polkinghorne during the investigation of the death of the former surgeon's wife.

Later, Seymour found himself in trouble after he drove a Land Rover up Parliament's steps - and had to stop after authorities claimed he was breaking the rules.

Newstalk ZB political editor Jason Walls says this isn't a good look for Prime Minister Chris Luxon.

LISTEN ABOVE

See omnystudio.com/listener for privacy information.